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Title : TLS using EAP Authentication
Author(s) : Y. Nir, et al.
Filename : draft-nir-tls-eap-02.txt
Pages : 19
Date : 2007-10-14
This document describes an extension to the TLS protocol to allow TLS
clients to authenticate with legacy credentials using the Extensible
Authentication Protocol (EAP).
This work follows the example of IKEv2, where EAP has been added to
the IKEv2 protocol to allow clients to use different credentials such
as passwords, token cards, and shared secrets.
When TLS is used with EAP, additional records are sent after the
ChangeCipherSpec protocol message and before the Finished message,
effectively creating an extended handshake before the application
layer data can be sent. Each EapMsg handshake record contains
exactly one EAP message. Using EAP for client authentication allows
TLS to be used with various AAA back-end servers, such as RADIUS or
Diameter.
TLS with EAP may be used for securing a data connection such as HTTP
or POP3. We believe it has three main benefits:
o The ability of EAP to work with backend servers can remove that
burden from the application layer.
o Moving the user authentication into the TLS handshake protects the
presumably less secure application layer from attacks by
unauthenticated parties.
o Using mutual authentication methods within EAP can help thwart
certain classes of phishing attacks.
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